Consulting for wireless and optical communication
companies, including Zyray Wireless (acquired by Broadcom) and Blue7
Communications (acquired by Sigma Designs). From 2002-2004 on the Scientific Advisory
Board of Zyray Wireless (acquired by Broadcom).

Former voting member of IEEE802.11 (active in 802.11n
and 802.11s), Technical Editor for the JC-61 subcommittee of the JEDEC standards
organization, and Scientific Council member for the Antenna Centre of
Excellence. See http://www.ist-ace.org/.

Guide the research and development of Eigent’s wireless
products, including security/encryption for RFIDs under US government contracts.
See http://www.eigent.com/
.

3/02-Present

Motia, Middletown,
NJ (also Pasadena, CA)

Chief Scientist, Advisory Board
Member

Responsible for the creation and development of Motia’s
smart antenna technology, and for how it is used in the company’s products. In
addition to guiding the development of these products, responsible for
investigating additional uses for Motia’s smart antenna technologies and
ensuring that Motia takes advantage of all relevant technological advances.
Products include a smart antenna, blind RF beamforming IC for 2.4 GHz,
commercialized in the Xterasys Hi-Gain WiFi MIMO
Signal Booster, SAS2800, (see http://www.xterasys.com/product/sas2800.htm
). See http://www.motia.com/
.

8/81-3/02

AT&T Labs-Research, Middletown, NJ.

Division Manager, Wireless Systems Research
Department.

Research on signal processing, modulation, and coding
techniques for communication systems; determining fundamental bounds on
performance, and devising and implementing practical techniques for approaching
these bounds. Specifically:

1) From January 2001 to March 2002, head of department
with 19-32 members performing research focusing on the physical layer of
wireless communication systems. The work of the department
included:

a) Devised and applied techniques (multiple antennas,
equalization) to 802.11 wireless local area networks to extend applications to
outdoors and increase robustness and reliability.

b) Pursued commercial implementation of the above by
creating (currently in the final stages) two spinout
companies.

2) Proposed, analyzed, and implemented techniques for
using adaptive (smart) antennas in cellular, indoor, and wideband radio systems.
Led a team effort to implement these techniques at 900 MHz and 2 GHz and
integrate adaptive arrays into existing AT&T systems, and successfully
demonstrated interference cancellation in both cellular and indoor environments.
Worked with AT&T's vendors (Ericsson and Lucent) through AT&T Wireless
Services to incorporate smart antennas into IS-136 base stations (starting in
1999, and now in nearly all IS-136 base stations). Elected IEEE Fellow, as well
as named a New Jersey Inventor of the Year for 2001, for pioneering work in this
area. Obtained more than 10 U.S. patents (plus foreign
equivalents) for these and related techniques. Pioneered MIMO
(multiple-input-multiple-output) with spatial multiplexing in the mid 1980’s.
See Wikipedia entry on MIMO, http://en.wikipedia.org/wiki/Multiple-input_multiple-output_communications
.

3) Proposed, analyzed, and implemented signal processing
techniques for Gbps long-haul and undersea lightwave systems. Invented and
demonstrated techniques for adaptive equalization at multi-Gbps data rates,
including adaptive decision feedback equalization, which has been implemented at
10 Gbps on a single decision circuit IC, and linear equalization, for mitigating
the intersymbol interference that limits the achievable data rate in future
systems. Was the first to demonstrate the equalization of polarization mode
dispersion, overcoming a major impediment to higher data rates in lightwave
systems, including the use of adaptive polarization control at 2.5 Gbps.
Obtained 5 U.S. patents (plus foreign equivalents) in this area. Pioneered the
use of EDC (electronic dispersion compensation) in the late 1980’s and
1990’s.

4) Worked in a wide variety of other communication areas
including

a) determined the fundamental limits on ultrasonic
imaging and devised a technique to approach these limits with real time image
processing,

Devised and demonstrated a four-phase modulation scheme
that gives the advantages of spread spectrum with adaptive arrays, without
increasing the signal bandwidth, resulting in increased immunity against
jamming. Showed that with conventional differential detection and intersymbol
interference, frequency uncertainty, or noise correlation, the error rate is
unequal for different symbols, but this difference can be decreased and error
rate reduced by using symmetrical differential encoding or adjusting the
decision boundaries in the receiver.

Determined the carrier frequency and power requirements
for future global satellite systems, including the effect of crosstalk,
intermodulation, etc., and developed software (and documentation) for system
planning.

OTHER
ACTIVITIES AND AWARDS

Fellow, IEEE.

New Jersey Inventor of the Year for 2001.

Editor for Equalization and Area Editor for the IEEE Transactions on Communications
since 1992.

The OhioStateUniversity ElectroScience
Laboratory's Award for the

Outstanding Dissertation for 1981.

The IEEE Vehicular Technology Society's Runner-up VTS
Paper of the Year

1."Spread Spectrum in
a Four-Phase Communication System Employing Adaptive Antennas," IEEE Trans. on Communications Special Issue
on Spread-Spectrum Communications, May 1982, also in Spread-Spectrum Communications, IEEE
Press, NY, 1983.

2."Switched Diversity
with Feedback for DPSK Mobile Radio Systems,"
IEEE Trans. on Vehicular Technology,
February 1983.

3."Optimum Combining
in Digital Mobile Radio with Cochannel Interference," Special Issue on Mobile Radio Communications IEEE Journal on Selected Areas
in Communications, July 1984, IEEE
Trans. on Vehicular Technology, August 1984.

10."The Capacity of
Wireless Communication Systems Can Be Substantially Increased by the Use of
Antenna Diversity," (with R. D. Gitlin and J. Salz), Proc. of the 1st International Conference on
Universal Personal Communications, September 1992.

36.“System and method
for providing a smart antenna,” (with James Wang, and Richard McConnell), Patent 7,257,425, August 14, 2007.

37.“Wireless communication system using a plurality of
antenna elements with adaptive weighting and combining techniques,” (with James
Wang, Meng Doong, and Chau Yang), Patent
7,260,370, August 21, 2007.